Epson Stylus COLOR 3000 Service Manual - Page 144

Troubleshooting Table 5-11. Repair of M-4I60 Printer Mechanism(continued) Condition Cause Checkpoint Solution Symptom : Abnormal printing (continued) Vertical lines don't align. White banding problem occurs. Bi- is not properly adjusted. Perform necessary  adjustments. (Refer to Chapter 4.) The printhead is defective. Repeat cleaning at least 3 times and Replace the printhead. check if the condition is improved. If not, replace the printhead and run the Self-test. Paper feed mechanism does not operate normally. Replace the PF motor.  Outline of the image is not clear. Color inks don't print properly. Head angular is not properly adjusted. Head gap is not properly adjusted. Black and color printheads are not vertically aligned. The printhead is defective. Perform necessary  adjustment. (Refer to Chapter 4.) Perform necessary  adjustment. (Refer to Chapter 4.) Perform necessary  adjustment. (Refer to Chapter 4.)  Replace the printhead. Symptom : Paper is fed abnormally. Paper is not fed. The top edge of the loaded paper is not properly positioned. Foreign objects Turn the knob and check if the paper are lodged in the feed mechanism is normally edge guide, PF functioning. roller, paper guide unit, or paper eject drive unit. Remove the foreign objects. The PF motor is defective. Check if the resistance of the motor coil is as follows; 10 Ω ± 10% at 25 °C per phase (Refer to Table 5-1.) Replace the PF motor. The PF roller Check if micro powder is remaining on Clean the PF roller. surface has micro the PF roller. pearl of the glossy film and doesn't grip paper properly. Symptom : The printer detects paper size incorrectly. The printer prints beyond the printing area. CR PW sensor is Load the paper and check the Pin 24 defective. and Pin 25 on the CN21 for the change in the signal HIGH and LOW. 5-16 Rev. A